CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

differencing schemes for 3-D Convection-diffusion problems

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   September 16, 1999, 04:16
Default Re: differencing schemes for 3-D Convection-diffusion problems
Bob Roach
Posts: n/a
But you still didn't answer Andy's question as to the effective Reynolds number. If it is low, you may be able to get away with a scheme that is more central. If you can stand it, a fine grid will reduce the cell Reynolds number to the point where central difference would be the preferred stencil. Apart from that, John Chien's advice about the varying coefficients being included in the differencing is extremely important if you want to keep from introducing non-conservation type errors which definitely delay convergence. Good lucks.
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Convection discretization schemes for LES sek OpenFOAM Running, Solving & CFD 37 November 28, 2015 14:41
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
Best Method for solving 2d convection diffusion vishal Main CFD Forum 2 September 27, 2008 17:19
AMG parallelisation and convection schemes christian OpenFOAM Running, Solving & CFD 3 December 17, 2007 09:21
Recommended convection schemes for swirling flow in diffuser hani OpenFOAM Running, Solving & CFD 12 August 23, 2005 11:05

All times are GMT -4. The time now is 18:47.